Collection: SINGER® Bobbin Case

Most modern SINGER® domestic machines use a Class 15 drop-in bobbin system, but some older or industrial-style models may require the smaller L-Style bobbin case; check your manual for the correct bobbin type.

Metal bobbin cases are generally recommended for their durability and consistent thread tension at higher speeds, while plastic drop-in bobbins offer visibility of the remaining thread.

Yes, SINGER® heavy-duty machines often use a more robust rotary bobbin case designed to handle thick threads and provide stronger, more consistent sewing power through multiple layers of fabric.

The spring applies tension to the bobbin thread; you can adjust the tiny screw on the spring to increase or decrease the bobbin tension for specialty threads or bobbin work.

You should use only genuine SINGER® bobbins of the specified class (e.g., Class 15) for your bobbin case, which are available in the SINGER® accessories section to prevent machine jamming.